avees



(No Model.)

\ J. SCOTT y8v F'. G. AVER-.5.

Y CASTBR. Nogzsmsl. PatentedMayQ, 1882. Y

YI R

A UNITED STATES PATENT OEEICE.

JOHN SCOTT AND FRANK G. AVERS, OF CHICAGO, ILLINOIS, ASSIGNORS OF ONE-THIRD TO HERBERT M. AVERS, OF SAME PLACE.

CASTER.

SPECIFICATION torming part of Letters Patent No. 257,834, dated May 9, 1882.

Application tiled June 7, 1881. (No modele) To all whom ct may concern:

Beit known that we, JOHN SCOTT and FRANK G. AvEIts, citizens of the United States of' America, residing at Chicago,in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Casters; and we do hereby declare the following to be a full, clear, and exact description of the invention, Such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to theaccompanyin g drawings, and to letters or Iigures of reference marked thereon, which form a part of thisv specification. r 5 Our invention relates to furniture-casters 5 and it consists in the construction and arrangement of its several parts, as will be hereinafter fully set forth, and pointed out in the claims. Figure 1 is a sectional view of the leg, showzo ing a front view of the caster attached thereto. Fig. 2 is a side view with the wall of the caster broken away to show the anti-friction wheel. Fig. 3 is a detail view enlarged, showing the anti-friction wheel and bearing.

The letter A represents a metallic plateo.xst of any desirable size to suit its appliance to the leg of a` table or other piece of furniture, and is formed with the central elevation, A', and hole B for receiving the vertical pivot otl 3o the caster. This plate is also formed with the downward-extending flange C, made with a beveled base, D, against which the face of the anti-friction wheel bears. is screwed in place, as shown at E, andhas the screw-hole F for the purpose ot' placin ga screw the end of which extends throughfthe Wall into the groove or notch cut around the vertical pivot of the caster. The letterB represents the caster-frame, carrying the ordinary main wheel, G,) formed with the vertical pivot H, having the notch or groove I extending around it. responds with the chamber in the plate, and the frame at its base extends ,at light angles to its axis, and is provided with the oblique slot K and journal-hole and socket at right angles to the slot, and in this slot fits the antifriction wheel C', so adjusted atan angle that its face bears on the beveled base of the wail keeping the surface of the plate and the face This flanged plate The vertical pivot corot' the plate on the leg, so that the caster re- 5o volves on its vertical pivot. The adjustment ot the parts in place is plainly shown in the drawings, and from this the operation will be fully understood by those skilled in the art; but it will be observed that the small screw which extends through the wall Ot' the vertical extension ot' the plate into the vertical pivot of the caster serves to maintain it (thecaster) in place should the body which it bears be lifted from the surface, and also that the oblique 6o anti-friction wheel is so adjusted as to bring the weight of the body supported on its rim and directly'over the axle ofthe caster-wheel,

from contact.

It will be seen by reference to the drawings thatthe case A,'with the downward flange C, overhan gs the upper portion ot' the casterframe and protects the anti-friction wheel C and hearings from dust, Src., and at the same 7o timethe flange C prevents any wabbling of the caster in its rotary motion. i

that we claim as our invention, and desire to secure by Letters Patent., is

l. In a caster, the combination ot" the case A, provided with recess I, and having beveled surface D and downwardextending ilange C, withlthc caster-frame B, with a pivot, H, and having an'oblique slot, K, adapted to receive the anti-friction wheel C', all arranged and op- 8o' erating` as set forth.

2. The improved caster hereinhetore described, consisting of the frame B, with the side cheek-pieces, B', between which is journaledand revolves the wheel G, and formed with the oblique slot K, in which isjournaled diagonally the anti-friction wheel C', and provided with the pivot or shank H, formed with the groove, and the flanged casing A, formed with thc-central elevation, as shown and set 9o forth.

In testimony whereof we aflixour signatures in presence Ot' two witnesses.

. JOHN SCOTT.'

FRANK G. AVERS.

Witnesses:

WILLIAM G. MILLER, J No. W. WILLIAMSON. 

